Finding the Fourth Proportional to 644,694.36, 889,307.58 and 402,556.56
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Solution
The fourth proportional to 644,694.36, 889,307.58 and 402,556.56 is: 555,296.62
Step by Step Solution
- Step 1: Write the proportion equation
644,694.36 : 889,307.58 = 402,556.56 : x - Step 2: Convert to fraction form
644,694.36/889,307.58 = 402,556.56/x - Step 3: Cross multiply
644,694.36x = 889,307.58 × 402,556.56 - Step 4: Simplify right side
644,694.36x = 357,996,600,186.73 - Step 5: Solve for x
x = 357,996,600,186.73/644,694.36 - Step 6: Final answer
x = 555,296.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.